We ran at the Spring Mountain Viper Days event last weekend. One of the four run groups was for Radicals only. These little cars are wicked fast with incredible handling. My wife's GTS is in the shop getting heads / cam, etc., so she took a test drive in one with the owner.
If memory serves, with an experienced driver, the faster Radicals made it around the track in the 1:20's. The fastest comp coupes were in the 1:40's. Rookie Radical drivers also ran 1:40's.
I'll still keep my Viper, but this is a big difference on a 2.2 mile track and a good example of what a specialized race car can do.
We're going back for driving lessons in a month or two.